Merge "init: turn off backlight when performing shutdown cleanup"

#include "builtins.h"

#include <dirent.h>

#include <errno.h>

#include <fcntl.h>

#include <mntent.h>

#include <selinux/label.h>

#include <fs_mgr.h>

#include <android-base/file.h>

#include <android-base/parseint.h>

#include <android-base/stringprintf.h>

#include <cutils/partition_utils.h>

    return ret;

}

// Turn off backlight while we are performing power down cleanup activities.

static void turnOffBacklight() {

    static const char off[] = "0";

    android::base::WriteStringToFile(off, "/sys/class/leds/lcd-backlight/brightness");

    static const char backlightDir[] = "/sys/class/backlight";

    std::unique_ptr<DIR, int(*)(DIR*)> dir(opendir(backlightDir), closedir);

    if (!dir) {

        return;

    }

    struct dirent *dp;

    while ((dp = readdir(dir.get())) != NULL) {

        if (((dp->d_type != DT_DIR) && (dp->d_type != DT_LNK)) ||

                (dp->d_name[0] == '.')) {

            continue;

        }

        std::string fileName = android::base::StringPrintf("%s/%s/brightness",

                                                           backlightDir,

                                                           dp->d_name);

        android::base::WriteStringToFile(off, fileName);

    }

}

static void unmount_and_fsck(const struct mntent *entry) {

    if (strcmp(entry->mnt_type, "f2fs") && strcmp(entry->mnt_type, "ext4"))

        return;

        svc->Start();

    }

    turnOffBacklight();

    int count = 0;

    while (count++ < UNMOUNT_CHECK_TIMES) {

        int fd = TEMP_FAILURE_RETRY(open(entry->mnt_fsname, O_RDONLY | O_EXCL));